Features used to implement the example

• Calculated Number Field

Example:

Number of open subtasks

In this example, the subtasks of the current issueCount the number of subtasks, which are open - so (in status category "category  To Do" or "In Progress" -, will be counted and displayed in a Calculated Number Field).

The configuration of this custom field will look like thisA valid configuration for this Calculated Text Field:

Text to be parsed

• count(filterByPredicate(subtasks(), ^%{00144} = "To Do" OR ^%{00144} = "In Progress"))

Note that:

• %{00144} is the field code for field  Status categoryCategory
• The ^ is used for referencing to the field values of the issue list l - in this case "subtasks()" (see below). Otherwise it would be referenced . Without, the field codes would reference to the current issue.
  [Schema for function filterByPredicate(issue list l, boolean expression predicate)]

Adding the custom field Once configured and added to an issue with subtasks in different categories screen, the result will look like this:

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